40234239 has 16 divisors (see below), whose sum is σ = 60345440. Its totient is φ = 26821368.

The previous prime is 40234219. The next prime is 40234241. The reversal of 40234239 is 93243204.

It is a happy number.

It is not a de Polignac number, because 40234239 - 2⁸ = 40233983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40234219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7012 + ... + 11385.

It is an arithmetic number, because the mean of its divisors is an integer number (3771590).

Almost surely, 2^40234239 is an apocalyptic number.

40234239 is a deficient number, since it is larger than the sum of its proper divisors (20111201).

40234239 is an frugal number, since it uses more digits than its factorization.

40234239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18418 (or 18400 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 40234239 is about 6343.0465077910. The cubic root of 40234239 is about 342.6614622234.

The spelling of 40234239 in words is "forty million, two hundred thirty-four thousand, two hundred thirty-nine".